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The main aim of this paper is to propose a solution to improve the life time of the network by reducing the no of active nodes that participate in communication. Life time of a WSN is improved through optimizing communication and minimizing energy usage. One way of optimizing communication is through cluster head selection. In this paper active nodes at an instance are identified using hit set. One among the active nodes is elected as cluster head by considering the degree of the node. Finally, depending on the no of sleep nodes in the cluster the percentage of prolongation of the lifetime of the network is calculated.
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